Hello, I just purchased a AVR-X6200W from JD at AVScience. It is replacing my AVR-4520ci. I have an 11.1/2 setup now with 6 external amps. An Emotiva XPA-1 powers my center, an Emotiva XPA-2 powers my left and right mains, an Emotiva XPA-5 (using only 4 of it's amp channels) powers my side and rear surrounds. I use the 4520 to power my height and wides. l An Emotiva amp that powers 3 sets of stero speakers in 3 other areas/zones of my house. I also have eight 18" sealed subwoofers that are powered by two pro style amps. I have already hung 4 speakers from my ceiling anticipating my X6200 for Atmos. I was looking forward to the upgrade in sound until I read some posts earlier this year you made in the "The Official Dolby Surround Upmixing Thread" where you posted you had a 4100 and a 5200 hooked up together to get Atmos 11.1.7 and Auro 3D 17.1! I have 5 or so "extra" speakers lying around so I have plenty to do what you did but can I with the 6200W/4520ci combo? Thanks,Brian